Saw gauge



April '12 192 7.

M. J. HAHRE SAW GAUGE Fil'ed June 22, 1925 MM) Jzww, 3 m

mfneddes C-C-C-Lm f Patented Apr. 12, 1927 UNITED STATES MARTIN J. HAHRE, OF SMITHERS, BRITISH COLUMBIA, CANADA.

SAW GAUGE.

Application filed June 22, 1925. Serial No. 38,840.

This invention relates to saw tools and has particular reference to an improved saw gauge.

An important object of the invention is to provide a gauge which may be firmly associated with the teeth of a saw for dressing the same. 1

A further object of the invention is the provision of a gauge of the above character which may be operatedin an angular position for various operations on the saw teeth.

A still further object of the invention is the provision of a saw gauge whichis of compact and durable construction and may be placed upon the market at a relatively low cost.

Other objects and advantages of this invention will become apparent as the description progresses.

In the accompanying drawing forming a part of this specification and in which like numerals are employed to designate corresponding parts throughout the same:

Figure l is a, front elevation of my improved gauge shown in position for ointmg saw teeth, 1

Figure 2 is a rear elevation showing the device in angular position for jointing raker teeth F igure 3 is a top plan view of the device as shown in Figure 2,

Figure 4 is a transverse sectional view taken on the line H of Figure l,

Figure 5 is a transverse sectional view taken on the line 5--5 of Figure 2,

Figure 6 is a similar view taken on the line 6-6 of Figure 1, and o 1 Figure 7 is a rear elevation of the device in its vertical operative position.

In the drawing, wherein for the purpose of illustration is shown the preferred embodiment of myinvention, the numeral 10 generally designates the assembled gauge member composed of two complementary sections 11 and 12 hingedly connected for angular movement of one section relative to the other.

The upper section 11 is composed of a pair of spaced vertical side plates 13 provided on the upper forward edge with a horizontal longitudinally extending flange 14. This flange is reinforced at its central ortion by the provision of a pad 15 formed y con structing the central portion of the flange 14 of heavier material, the purpose of which will be hereinafter more fully described. Formed on the lower forward edges of the side plates 13 and extending continuously thereover is a supporting flange16, also of heavier construction intermediate the side plates 13, to provide a solid structure. It will be noted that the upper flange 14 is disposed in spaced relation about the supporting flange 16 and. is of substantially wider construction as shown to advantage in Figures 2 and 4. The central portion of the flange pad 15 is provided with a pair of 1- internally threaded openings for receiving therein a set screw 17 positioned adjacent theinner edge of the flange 14 and a machine screw 18 positioned adjacent the outer edge of the flange carrying a lock nut 19, the purpose of these screws will become apparent as the description progresses. It can be readily seen from the foregoing construction that a comparatively wide slot is provided between the side plates 13 extending from the rear sides of these lates to the flanges 14 and 16 extending in a ignment with the forward sides of the plates.

The lower complementary section 12 embodies a pair of side )lates 20 of somewhat wider. construction an disposed directly be neath the upper side plates 13. The upper and lower plates 13 and 20 are connected by hinges 21 permitting the upper side plate 13 to swing from a vertical aligned position to a right angular position. The lower forward edges of the lower side plates 20 carry a longitudinal tapered flange22 extending longitudinally along the lower edges and between the plate, the outer edge of this flange being substantially in alignment with the outer edge of the supporting flange 16 when the sections are in vertically aligned positions. I

Referring now particularly to Figures 2 and 3 it will be seen that the rear edge of the supporting flange 16 in the vertical arrangement of the upper section assumes an angular position relatir e to the longitudinal planes of the side plates 18 to provide a gauging surface. With particular reference to Figure 2 it will be noted that this surface of the supporting flanges 1d and 16 between the side plates 13 assumes a downward slope from the left hand end, which is substantially even with the inner side of the side plate 13, to the right hand extremity which terminates somewhat below theinner side of the side plate when the.

upper section is tilted in an angular position relative to the lower section. This edge also bears graduations having corresponding numerals mounted thereon. to indicate inches or any desirable units as shown at 23. The purpose of this construction will become apparent when the operation of the device is explained. I

In use, when it is desired to joint the saw teeth of a saw the sections 11 and 12 are positioned so as to cause the upper and lower side plates 13 and to assume coplanar or aligned positions. A suitable file designated by the numeral 2 1 is then posiioned between the upper flange 14D and the supporting flange 16, being firmly retained in position by operation of the. set screw 17. 'ihe body of the file will extend substantially beyond the supporting flange as clearv shown in Figure 6, so that the upper edges of the saw teeth, shown in Figures 1 and 1 and indicated by the numeral, 25, will contact therewith. The inner edges of the flanges 16 and 22 are moved inv contact with he sides of the teeth so as to properly guide the gauge and file.

\Vhen itis desirable to joint the raker teeth the upper body section 11 is swung about the hinges 21 so that the side plates 13 assume horizontal or right angular posi tions to the side plates 20. The device is )OSliIIOIlGd upon the saw teeth so as to enflanges 14; and 16, as shown to advantage in Figure 5, the lower flange. 22 also engaging one side of the teeth so as to firmly brac the position of the gauge. Due to the an gular position of the upper edge of th flange 16 the upper points ot the teeth wil project above this flange in directly in creasing ratio from the left to the righ hand ends of the flange.

are placed in the desired position against? the supporting flange 16 and jointed by the A position when jointing the raker teeth. exact height of the raker teeth points; which are preferably shorter than the saw transverse movement of a file upon the an gular gaugmgsurface of the flange, the

teeth, may be regulated by the position of the raker teeth relative to the graduations which will indicate the proper height desirable for various operations. After the raker teeth have been properly jointed the upper section 11 is then wung back to its aligned position and the saw teeth positioned against the forward edges of the flanges 16 and 22' so that the points of the raker teeth may be gauged by means of the machine screw 18 which is locked in proper position. The gauge screw 18 is employed to determine the height of the raker tooth points. In applying the gauge screw to the teeth, the tiltable section is arranged in a raised position in vertical alignment with the sta tionary section. The screw 18' will then be The raker teethpositioned in vertical alignment with the raker teeth so that the. respective. lengths of the raker tooth points can be ascertained.

It isv obvious 'Jjron the. foregoing description that my improved gauge is especially adapted for jointing the raker teeth of the saw which operation may be accomplished in a very accurateand etflcient manner.

During the raker teeth jointing operation the gauge is retained in. firmly associated position with. the saw and the exact height of raker teeth relative to the saw teeth, ob.- tained: without difliculty.

It is tov be understood that the form of my invention herewith shownv and describedis to be taken as the preferred. example of the same, and: that various changes as to the shape, size and arrangement of parts may be resorted to Without departing from the. spirit of the invention, orthe scope of the. subjoined claims. Having thus described my invention, 1 i claim:

1. A saw. gauge comprising an upper secioncomposed of side plates, a pair of paced longitudinal flanges connected to: andextendingbetween the side plates, aset screw threadedly mounted in the upper flange, a machine screw threa-dedly mounted n the upper flange; and: a lower section inlower plates, h-inge members secured tothe t jadjacent edges of the upper and lower secgtions adapted to permit the upper section g to swing in an angular posltionrelativeto the lower section.

2. A saw gauge comprising a. longitudinal frame including a lower section, an upper section tiltably connected, to the lower section for vertical angularmoveme-nt, the said ,tlower section being arranged for engaging the side of the saw teeth, and the upper section adapted for vertical position when jointing the sawing teeth and right angular 3. A saw gauge comprising alongitudinal frame including a lower stationary section composed of apair of spaced side plates arranged in alignment, a flange formed on; the lower edges of the side plates and extending between the plates for unitary connection; an upper movable section hingedly connected to the lower section composed; of a pair of spaced side plates, a. pair of flanges arranged in spaced relation therebetween, the said upper movable section being arranged in a vertical position for jointing the. sawing teeth, and arranged in. a right angular position for engaging the upper edges of the teeth for jointing of the raker teeth.

4. A saw gauge comprising a lower stationary section, an upper movable section hingedly connected, to the upper edge of the lower section having a pair of spaced eluding a pair of side plates, a; tapered, iflange formed onthe lower edges of the gage or straddle the teeth between the flanges formed thereon, the saidflanges being arranged to engage a file for ointlng the saw teeth, and arranged to straddle the upper edges of the teeth when the upper sec-' tion is tilted in a right angular position for jointing of the raker teeth.

5. A saw gauge comprising a frame formed of hingedly connected sections, the lOWer section being relatively stationary and arranged to engage the sides of the saw teeth, an upper section arranged for angular swinging movement having a pair of longitudinal spaced flanges formed on the forwz rd portion, the said flanges being arranged to receive the saw for jointing the sawing teeth, and adapted to be tilted so as to engage the upper point of the teeth between the flanges when in an angular position to permit convenient jointing of the raker teeth, means for detachably securing a file between the said flanges, and a gauge screw adjustably carried by the upper flange for gauging the height of the teeth.

(5. A saw tooth gauge composed of two sections, the lower statlonary section adapted to be positioned against the sides of the teeth, and an upper section hingedly connected with the lower stationary section arranged for tiltable movement, the said upper section being adapted for right angular swinging movement to straddle the upper portions of the teeth when jointing the raker teeth to facilitate accurate jointing thereof.

7. In a saw tooth gauge comprising a lower frame section, an upper frame section hingedly connected with the lower section adapted for vertical swinging movement, a gauge flange formed on the upper section having one side formed at an angular inclination with respect to the longitudinal axis of the frame arranged so that when the upper section is tilted at a right angular horizontal position with respect to the lower section the angular side of the gauge flange will be positioned uppermost for jointing the points of the raker teeth of the saw.

8. A saw tooth gauge comprising a lower stationary frame section, and an upper swinging section hingedly connected with the lower section adapted for swinging movement in a vertical are from a vertical position in vertical alignment with the lower section to a right angular horizontal position.

In testimony whereof I affix my signature.

MARTIN J. HAHRE. 

